Trolley-wheel



I s. s. RIGBY.

TROLLEY WHEEL;

APPLICATION FILED QCT. 24" 1921.

Patented D60. 27, 1921.

fl' ctozwagfi UNITED "s T ATE s PATENT OFFICE.

smear. s. RIGBY, or NEW CASTLE, PENNSYLVANIA.

*raoLLEY-wI-mnn To all whom it may co nom'a: a T

Be i known that I, SAMUEL Sgltraer, citizen of Pennsylvania, U. S. A.,residing T at the city of New Castle, in the county of Lawrence andStateof Pennsylvania, have invented certainflnew and useful Improvementsin Trolley-Wheels, of which the following is a specification, referencebeing had T therein tothe accompanying drawings. 1 T

T and harps and it has for its objectto pro- "vide an improveddevice ofthis nature constructed in such manner as to guard agalnst theaccidental dislodgment of the trolley structure from thejtrolley wire. ai i A further object of the invention is to provideiinproved means oflubricating the trol ley wheels. a V l T e T Like numerals designatecorresponding parts in the T accompanying drawing in which,

Figure 1-is a sideelevation of the upper l part ofa trolley harp havinga trolley wheel 1 e mountedtherein'; and T Fig. 2 is a verticalsectional view therethrough.

In the drawing 5 designates the trolley wheel which is mountedforrotation upon a pin or shaft 6. The ends of the shaft 6 are 3 3secured by pins 7 in guard rings 8 of wheel- 1 likegformation, theserings being secured-to the outerfacesof the sides 9 of thetrolley T Tharp by screws 10. The sides 9 of the trolley harp are extended to aconsiderable dis- Tare provided upon their inner faces with downwardlyand inwardly directed guards 12,;Tto provide positive retaining recessesfor thetrolley Wire,:if the wire tends to leave T the harp in roundingcurves. The upper faces of the guards or stops are 1ncl1ned,as indicatedat 13, and act to guide the trolley wire into the channel 14 of thetrolley wheel T when placing thetrolley upon the wire. By

referring to Fig. 1 it will be observed that the lower edges 11 of theguards or stops 11 areconvex and that these guards or stops merge intoand are integral with the sides 9 of the harp leaving no abruptshoulders to This invention relates to trolley wheels tance above thetopof the trolley wheel, as indicated at 9' andthese extended portionsorstops ll which are of hook-like formation, 1 in that they. areundercut, as indicated, at

Specificationot Letters Patent. Patented D 27 1921. ap lication filedOctober 24, 1921.

Serial No. 509,960.

catch on the wire or interfere with the proper placlng of the trolleyupon the wire.

oil chamber 15 is formed in the intenor of the trolley wheel 5 port 16leads from this chamber and communicates with a port 17 formed in one ofber 15.

It is to be understood that the invention is not limited to the preciseconstruction set forth but that it includes within its purand a fillingview whatever changes fairly come within 1 either the terms or thespirit of the appended claims.

Having described my invention what I claim is: V i T 1. T device of thecharacter described comprising a trolley wheel and harp, the sides ofthe harp being extended above the trolley wheel and being providedupontheir inner faces with integral downwardly and inwardly directedhook-like portions having undercut concave lower sides which lie whollyabove the trolley wheel.

2. A structure as recitedin claim 1 wherein said downwardly and inwardlydirected hook-like portions are provided with longitudinally convexlower edges which merge into the side walls of the harp.

3. A structure of the character described comprising a trolley wheel, aharp consisting ofside walls which extend above said trolley wheel andguards or steps carried by said sides, and integral and rigid therewith,

said guards or stops having inclined upper faces and undercut concave.lower faces which lie wholly above the trolley wheel. a

4 A structure as recited in claim 3 where in said guards or stops havelongitudinally convex lower edges which merge into the walls of theharp. a

In testimony whereof I hereunto affix my signature.

SAMUEL s. RIGBY.

